[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-6313) ClassCastException specifying type="character" in hbm.xml

[ http://opensource.atlassian.com/projects/hibernate/browse/HHH-6313?page=c... ] Tom Jordahl commented on HHH-6313: ---------------------------------- I am also seeing this error after upgrading from Hibernate 3.5.3 to 3.6.6. It causes a regression in our test suites. Hibernate 3.6.6 Stack trace: java.lang.ClassCastException: java.lang.String cannot be cast to java.lang.Character at org.hibernate.type.descriptor.java.CharacterTypeDescriptor.unwrap(CharacterTypeDescriptor.java:34) at org.hibernate.type.descriptor.sql.VarcharTypeDescriptor$1.doBind(VarcharTypeDescriptor.java:52) at org.hibernate.type.descriptor.sql.BasicBinder.bind(BasicBinder.java:91) at org.hibernate.type.AbstractStandardBasicType.nullSafeSet(AbstractStandardBasicType.java:283) at org.hibernate.type.AbstractStandardBasicType.nullSafeSet(AbstractStandardBasicType.java:278) at org.hibernate.param.NamedParameterSpecification.bind(NamedParameterSpecification.java:67) at org.hibernate.loader.hql.QueryLoader.bindParameterValues(QueryLoader.java:571) at org.hibernate.loader.Loader.prepareQueryStatement(Loader.java:1716) at org.hibernate.loader.Loader.doQuery(Loader.java:801) at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:274) at org.hibernate.loader.Loader.doList(Loader.java:2533) at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2276) at org.hibernate.loader.Loader.list(Loader.java:2271) at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:452) at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:363) at org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:196) at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1268) at org.hibernate.impl.QueryImpl.list(QueryImpl.java:102) I'll take a look at making a patch if I can. I am suspicious of the code in VarcharTypeDescriptor.java: public <X> ValueBinder<X> getBinder(final JavaTypeDescriptor<X> javaTypeDescriptor) { return new BasicBinder<X>( javaTypeDescriptor, this ) { @Override protected void doBind(PreparedStatement st, X value, int index, WrapperOptions options) throws SQLException { st.setString( index, javaTypeDescriptor.unwrap( value, String.class, options ) ); } }; } It appears that is is trying to upwrap the character type as a string and this is what is trigger the cast exception, but I need to dig in to to figure out why the templated classes being used here are throwing the cast exception before any code (i.e. unwrap) is getting called. Developer eyes on this (Steve Ebersole?) would be very helpful as this is blocking our upgrade to 3.6. -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira